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Study of electromagnetically induced transparency in strong magnetic field using Rb nanometric-thin cell.

Armen D. Sargsyan, R. Mirzoyan, A. Papoyan, David G. Sarkisyan, Y. Pashayan-Leroy, Claude Leroy

Published Jun 28, 2011• 0 citations
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Recently we have obtained the high-contrast electromagnetically induced transparency resonance on 85 Rb and 87 Rb D 1 line in nanometric-thin cell of L = λ = 794 nm thickness. In present work we exploit the 40% contrast of EIT resonance to study its splitting in a very wide range of a B-field covering, for the first time, 1 – 1700 G region. Experimental results are fully consistent with the developed theoretical model.

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Electromagnetically induced transparency resonances inverted in magnetic field

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The phenomenon of electromagnetically induced transparency (EIT) is investigated in a Λ-system of the 87Rb D 1 line in an external transverse magnetic field. Two spectroscopic cells having strongly different values of the relaxation rates γrel are used: an Rb cell with antirelaxation coating (L ~ 1 cm) and an Rb nanometric- thin cell (nanocell) with a thickness of the atomic vapor column L = 795 nm. For the EIT in the nanocell, we have the usual EIT resonances characterized by a reduction in the absorption (dark resonance (DR)), whereas for the EIT in the Rb cell with an antirelaxation coating, the resonances demonstrate an increase in the absorption (bright resonances (BR)). We suppose that such an unusual behavior of the EIT resonances (i.e., the reversal of the sign from DR to BR) is caused by the influence of an alignment process. The influence of alignment strongly depends on the configuration of the coupling and probe frequencies as well as on the configuration of the magnetic field.

arXiv:1505.03856•Journal of Experimental and Theoretical Physics•Dec 1, 2015•15 citations
The phenomenon of electromagnetically induced transparency (EIT) is investigated in a Λ-system of the 87Rb D 1 line in an external transverse magnetic field. Two spectroscopic cells having strongly different values of the relaxation rates γrel are used: an Rb cell with antirelaxation coating (L ~ 1 cm) and an Rb nanometric- thin cell (nanocell) with a thickness of the atomic vapor column L = 795 nm. For the EIT in the nanocell, we have the usual EIT resonances characterized by a reduction in the absorption (dark resonance (DR)), whereas for the EIT in the Rb cell with an antirelaxation coating, the resonances demonstrate an increase in the absorption (bright resonances (BR)). We suppose that such an unusual behavior of the EIT resonances (i.e., the reversal of the sign from DR to BR) is caused by the influence of an alignment process. The influence of alignment strongly depends on the configuration of the coupling and probe frequencies as well as on the configuration of the magnetic field.